31485772 has 6 divisors (see below), whose sum is σ = 55100108. Its totient is φ = 15742884.

The previous prime is 31485767. The next prime is 31485791. The reversal of 31485772 is 27758413.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3935718 + ... + 3935725.

Almost surely, 2^31485772 is an apocalyptic number.

It is an amenable number.

31485772 is a deficient number, since it is larger than the sum of its proper divisors (23614336).

31485772 is a wasteful number, since it uses less digits than its factorization.

31485772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871447 (or 7871445 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 31485772 is about 5611.2184060149. The cubic root of 31485772 is about 315.7704228995.

The spelling of 31485772 in words is "thirty-one million, four hundred eighty-five thousand, seven hundred seventy-two".